Re: [Boost-users] BOOST_FOREACH and maps

Rob Caldecott wrote:

OK, I know BOOST_FOREACH isn't part of the official (1.33.1) build yet, but hopefully some people here are using this excellent algorithm and can help me out... (note that I am using MS Visual Studio 2005):

How can I use BOOST_FOREACH to iterate through a map? For example, the following won't build:

std::map m; BOOST_FOREACH(std::pair p, m) { }

I get the following error:

warning C4002: too many actual parameters for macro 'BOOST_FOREACH'

This is covered in the docs: http://tinyurl.com/l72gp Your solutions (pre-declare the loop variable or use a typedef) are the way to go. -- Eric Niebler Boost Consulting www.boost-consulting.com